CENTRAL (via CRS)	EMBASE (Ovid)	PubMed
#1 MeSH descriptor: [Cerumen] explode all trees #2 (Cerumen* or cerumin* or earwax or (ear and wax) or (ears and wax) or (ear and impaction) or (ears and impaction) or (ear and impacted) or (ears and impacted)):ti,ab,kw #3#1 or #2	1 cerumen/ 2 cerumen impaction/ 3 exp ceruminolytic agent/ 4 (Cerumen* or cerumin* or earwax or (ear and wax) or (ears and wax) or (ear and impaction) or (ears and impaction) or (ear and impacted) or (ears and impacted)).tw. 5 1 or 2 or 3 or 4	#1 "CERUMEN" [Mesh] OR CERUMEN* [tiab] OR CERUMIN* [tiab] OR earwax [tiab] OR (EAR [tiab] AND WAX* [tiab]) OR (EARs [tiab] AND wax* [tiab]) OR (EAR [tiab] AND impacted [tiab]) OR (EARs [tiab] AND impacted [tiab]) OR (EAR [tiab] AND impaction [tiab]) OR (EARs [tiab] AND impaction [tiab])
Web of Science	CINAHL (EBSCO)	Trial Registries
#1 TOPICS: (Cerumen* OR cerumin* OR earwax OR (ear AND wax) OR (ears AND wax) OR (ear AND impaction) OR (ears AND impaction) OR (ear AND impacted) OR (ears AND impacted))	S3 S1 OR S2 S2 TX (Cerumen* or cerumin* or earwax or (ear and wax) or (ears and wax) or (ear and impaction) or (ears and impaction) or (ear and impacted) or (ears and impacted)) S1 (MH "Cerumen") OR (MH "Cerumen Impaction") OR (MH "Ceruminolytic Agents")	ICTRP Cerumen* OR cerumin* OR earwax OR ear AND wax OR ears AND wax OR ear AND impaction OR ears AND impaction OR ear AND impacted OR ears AND impacted ClinicalTrials.gov (via CRS) Cerumen OR cerumin OR earwax OR (ear AND wax) OR (ears AND wax) OR (ear AND impaction) OR (ears AND impaction) OR (ear AND impacted) OR (ears AND impacted)